Recent questions in Chemical engineering

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Design a process for the optimized production of acrylic adhesives, taking into consideration the factors affecting adhesion strength, durability, and cost-effectiveness.

asked 1 day ago in Chemical engineering by ShavonneMcLa (390 points)

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Design a process for the large-scale production of hydrogen peroxide with high purity and yield, taking into consideration the environmental and economic factors.

asked 1 day ago in Chemical engineering by MQUWallace40 (590 points)

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Design a method of transportation and storage for flammable and toxic chemicals that minimizes the risk of leakage, spillage, fire or explosion, while keeping in mind the potential impacts on human health and the environment. Consider different factors such as the type of chemicals, routes of transportation, type of containers, safety measures, regulations, and emergency response plans.

asked 1 day ago in Chemical engineering by Tamela993032 (330 points)

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Design a lubricant production system that can produce 1000 liters of lubricant per hour for use in heavy machinery. The system should be cost-effective, environmentally friendly, and able to meet industry standards for quality and performance. Include a detailed process flow diagram and a list of the necessary raw materials, equipment, and safety precautions for the production process. Additionally, calculate the total production cost per liter of lubricant and propose strategies for reducing production costs without compromising product quality.

asked 1 day ago in Chemical engineering by DerekAmess50 (490 points)

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Design a heat exchanger that can transfer heat from a 10,000 L/h hot water stream at 80°C to a 5,000 L/h cold water stream at 20°C with a maximum temperature difference of 10°C. Calculate the required heat transfer area and select appropriate materials for the heat exchanger components based on the fluids' properties and operating conditions.

asked 1 day ago in Chemical engineering by AliceCahill0 (510 points)

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Design a heat exchanger that can effectively transfer heat between a hot stream of ethanol with a flow rate of 2 kg/s and a cold stream of water with a flow rate of 5 kg/s. The inlet temperature of ethanol is 80°C, while the inlet temperature of water is 20°C. The outlet temperature of ethanol should be 30°C, while the outlet temperature of water should not exceed 35°C. The heat exchanger should have a heat transfer coefficient of at least 500 W/m^2K and a total surface area of no more than 10 m^2.

asked 1 day ago in Chemical engineering by CarloReiner9 (450 points)

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Design a heat exchanger for the production of sulfuric acid at a flow rate of 1000 liters per hour. The inlet temperature of the acid is 80°C and the desired outlet temperature is 30°C. The cooling water is available at 20°C and has a flow rate of 2000 liters per hour. Determine the required heat transfer area of the heat exchanger assuming the overall heat transfer coefficient is 800 W/(m²K). What material would you recommend for the heat exchanger tubes and why?

asked 1 day ago in Chemical engineering by DarrinPokorn (410 points)

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Design a heat exchanger for a specific process that involves heating a liquid from 20°C to 60°C. The liquid has a flow rate of 500 L/hr, and it will be heated by steam at a pressure of 3 bar. The heat transfer coefficient for the steam is 3000 W/(m²·K), and the overall heat transfer coefficient for the heat exchanger is 500 W/(m²·K). Determine the surface area required for the heat exchanger and the flow rate of steam required to heat the liquid.

asked 1 day ago in Chemical engineering by FredAfford68 (630 points)

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1 answer 32 views

Design a heat exchanger for a specific process involving the heating of ethanol from 20°C to 80°C. The process flow rate of ethanol is 200 L/hr, and the heating medium is water available at 90°C with a flow rate of 500 L/hr. The heat transfer coefficient for the heat exchanger is 1000 W/m²K. Determine the surface area required for the heat exchanger to achieve the desired heating of ethanol using the given data.

asked 1 day ago in Chemical engineering by AntwanDelpra (370 points)

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1 answer 36 views

Design a heat exchanger for a specific process in which a 50,000 kg/day of a mixture with a specific heat capacity of 3.5 kJ/kg.K needs to be heated from 20°C to 70°C using a hot stream of 100,000 kg/day of a fluid with a temperature of 150°C. The heat exchanger needs to operate with a heat transfer coefficient of at least 400 W/m2.K and the pressure drop across the heat exchanger should be no more than 0.5 bar. What type of heat exchanger would be most suitable and what are the dimensions required to achieve the desired performance?

asked 1 day ago in Chemical engineering by EmmettWester (770 points)

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1 answer 33 views

Design a heat exchanger for a process where hot air (80°C) needs to be cooled down to 30°C using water (10°C) as the cooling medium. The flow rate of hot air is 2 kg/s and the desired outlet temperature of the cooled air is 35°C. The maximum allowable pressure drop for air side is 50 kPa and for water side is 100 kPa. Design the heat exchanger using the LMTD (logarithmic mean temperature difference) method and calculate the required area of heat transfer.

asked 1 day ago in Chemical engineering by CharleneKeen (570 points)

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1 answer 42 views

Design a heat exchanger for a factory that produces 10,000 liters of sulfuric acid per day starting at 70°C and needs to be cooled to 40°C for packaging. The available cooling water supply from the local municipal is at 20°C and is available at a flow rate of 1000 liters per minute. Design the heat exchanger to achieve the required temperature drop and calculate the heat transfer coefficient and the overall heat transfer coefficient.

asked 1 day ago in Chemical engineering by Elvira88M206 (590 points)

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Design a heat exchanger for a chemical process that requires the transfer of heat from a hot stream containing molten sodium at 1100°C to a cold stream containing water at 25°C. The hot stream inlet flow rate is 1000 kg/hr, and the cold stream outlet temperature should be limited to a maximum of 70°C. The heat transfer coefficient for the tubeside and shellside is 1000 W/m²K and 500 W/m²K, respectively. The design should minimize the size and cost of the heat exchanger while meeting the thermal requirements of the process.

asked 1 day ago in Chemical engineering by Lucas40K2221 (530 points)

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1 answer 23 views

Design a heat exchanger for a chemical process that requires heating of 50 kg/hr of water from 25°C to 80°C using steam as the heating medium. The available steam is at a pressure of 1.5 MPa and a temperature of 300°C. The overall heat transfer coefficient between the water and the steam is 600 W/m2K. The heat exchanger should be designed to accommodate a temperature drop of 5°C for both the water and the steam. Determine the required surface area of the heat exchanger and the mass flow rate of steam required to meet the process requirements.

asked 1 day ago in Chemical engineering by RolandoT7187 (370 points)

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1 answer 39 views

Design a heat exchanger for a chemical process that involves cooling 1000 kg of a liquid from 80°C to 40°C using water as the cooling fluid. The process flow rate is 5 kg/min and the maximum allowable pressure drop in the heat exchanger is 5 kPa. Assume a heat transfer coefficient of 1000 W/m²K for the liquid and 5000 W/m²K for the water. Design the heat exchanger to occupy a maximum area of 20 m². What is the surface area of the heat exchanger required and what would be the optimal flow configuration?

asked 1 day ago in Chemical engineering by JanetFuw9785 (470 points)

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1 answer 24 views

Design a heat exchanger for a chemical plant which produces 1000 kg/hr of a chemical at a temperature of 350°C. The chemical needs to be cooled down to 50°C using water at an inlet temperature of 25°C. The cooling water flow rate should not exceed 5000 kg/hr. The overall heat transfer coefficient should be at least 500 W/m2K. Determine the surface area of the heat exchanger required for this process.

asked 1 day ago in Chemical engineering by RalphLamingt (510 points)

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1 answer 39 views

Design a distillation column to separate a mixture that contains 40% ethanol and 60% water by weight with a desired ethanol purity of 95%. The feed rate of the mixture is 100 kg/hr and the reflux ratio is 3:1. Determine the number of theoretical plates required and the height of the column. Assume that the total condenser and reboiler are both at 100°C and that the distillate leaving the column is 90% liquid and 10% vapor.

asked 1 day ago in Chemical engineering by MadgeGreene4 (370 points)

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1 answer 41 views

Design a distillation column to separate a mixture of ethanol and water. The feed stream contains 20 mol% ethanol and the desired distillate should contain at least 95 mol% ethanol. The reflux ratio should be 3:1 and the column should have 25 theoretical trays. Determine the composition of the distillate, bottoms, and the optimal feed tray location to achieve the desired separation. Use McCabe-Thiele method to determine the number of theoretical trays required.

asked 1 day ago in Chemical engineering by TinaStamps81 (330 points)

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1 answer 40 views

Design a distillation column to separate a mixture of ethanol and water with an initial composition of 40% ethanol and 60% water. The column should achieve a separation of at least 95% ethanol in the distillate product. The available packing materials are Pall rings with a diameter of 1.5 inches and a height of 2 inches. The column inlet flow rate is 1000 kg/hr with a pressure of 1 atm and a temperature of 80°C. The column should have 25 theoretical plates and operate at reflux ratios ranging from 1.5 to 3.0. Additionally, the column diameter should not exceed 3 feet. Provide the design calculations and specifications for the distillation column.

asked 1 day ago in Chemical engineering by JacquelynP76 (650 points)

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Design a distillation column to separate a mixture of ethanol and water when the initial mixture contains 30% ethanol and 70% water. The desired final concentration of ethanol in the distilled product is 95%. The distillation column is 14 trays high and the reflux ratio is set at 2.2. Calculate the minimum number of theoretical trays required in the distillation column and provide the final composition of the ehtanol product stream.

asked 1 day ago in Chemical engineering by KarinGallego (630 points)

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